MEMS bubble generator for large stable vapor bubbles

Details MEMS bubble generator for large stable vapor bubbles MEMS bubble generator for large stable vapor bubbles

2006-10-10

2009-02-17

Fuqua, Shawntina (Department: 3742)

Electric heating

Heating devices

Combined with diverse-type art device

C219S469000, C219S243000, C219S486000, C219S501000, C219S499000, C219S497000, C219S470000, C219S471000, C347S062000, C347S020000, C347S054000, C347S056000, C347S060000, C347S012000, C347S010000, C347S011000, C399S067000, C399S069000, C399S329000, C399S333000

Reexamination Certificate

active

07491911

ABSTRACT:
A MEMS vapour bubble generator that uses a heater in thermal contact with a liquid to generate a bubble. The heater is energized by an electrical pulse that is shaped to have a relatively low power, sub-nucleating portion and a high power portion that nucleates the bubble. The thermal energy transferred to the liquid by the sub-nucleating portion speeds up the nucleation of the bubble across the surface of the heater during the nucleating portion. This produces larger, more stable bubble having a regular shape.

REFERENCES:
patent: 4746937 (1988-05-01), Realis Luc et al.
patent: 5886716 (1999-03-01), Heinzl et al.
patent: 6296350 (2001-10-01), Cornell et al.

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